UNE EN 15979:2025
Testing of ceramic raw materials and ceramic materials - Direct determination of mass fractions of impurities in powders and granules of silicon carbide by optical emission spectrometry by direct current arc excitation (DCArc-OES) (Endorsed by Asociación Española de Normalización in November of 2025.)
Ensayos de las materias primas y básicas cerámicas. Determinación directa de la fracción másica de impurezas en los polvos y gránulos de carburo de silicio con un espectrofotómetro de inducción óptica (OES) mediante una excitación del arco por corriente continua (cc) (Ratificada por la Asociación Española de Normalización en noviembre de 2025.)
| Standard number: | UNE EN 15979:2025 |
| Pages: | 25 |
| Released: | 2025-11-01 |
| Status: | Standard |
UNE EN 15979:2025
This document describes a method for the analysis of mass fractions of the impurities Al, B, Ca, Cr, Cu, Fe, Mg, Ni, Ti, V and Zr in powdered and grain-shaped silicon carbide of ceramic raw materials and ceramic materials. This application can also be extended to other metallic elements and other similar non-metallic powdered and grain-shaped materials such as carbides, nitrides, graphite, carbon blacks, cokes, carbon, as well as a number of further oxidic raw and basic materials after appropriate testing. NOTE There is positive experience with materials such as, for example, graphite, boron carbide (B4C), boron nitride (BN), tungsten carbide (WC) and several refractory metal oxides. This testing procedure is applicable to mass fractions of the impurities mentioned above from approximately 1 mg/kg up to approximately 3 000 mg/kg, after verification. In some cases, it is possible to extend the range up to 5 000 mg/kg depending on element, emission lines, DCArc parameters, and sample mass.
